Turn Signal Switch

As you'd expect, Turn Signal Switch is
a commonly used part. It's been used by YourMechanic in many appointments.
On average, these jobs have been completed with a rating of 4.6 out of 5.

This part is required for
a few services:
Turn Signal Switch Replacement,
Fog Light Switch Replacement and
Combination Switch Assembly Replacement.
and others, which are listed in the services section below.

What does
Turn Signal Switch Replacement
entail

The turn signal switch, located inside the car on the steering column, allows you to turn the signal bulbs on. Properly functioning turn signal lights are legally mandatory.

Keep in mind

The wiring for brake lights usually goes through the turn signal switch. This means that if the turn signal switch has gone bad, your brake lights may not be working.

Some vehicles use a “combination” switch. This switch operates the turn signals, running lights, and headlights.

What common symptoms indicate you may need to replace the Turn Signal Switch?

Left or right indicator light is not working.

Brake lights are not working.

Running lights or headlamps not working.

Unable to change from high to low beam and back.

How it's done

Inspect the switch, fuses, and wirings.

Remove and replace the switch if faulty.

Operate the turn signals verify operation of the exterior lights.

What does
Fog Light Switch Replacement
entail

Your fog lights work to reflect off not just fog, but also snow, glare, and dust particles – in short, anything that can obstruct your vision. They can also help you to see animals, tree branches, or other debris on the road so that you’re able to avoid them. Fog lights are positioned near the bottom of the front bumper of your car, and they deliver a flat, wide beam resembling a narrow bar. They operate on a separate unit from your standard car headlights, which means that they use a separate switch, wired on a separate circuit.

Keep in mind

Many drivers don’t know that their vehicle is equipped with fog lights.

What common symptoms indicate you may need to replace the Fog Light Switch?

Fog lights do not turn on

How it's done

The faulty fog light switch is identified and the trim panel is removed for access

The defective fog light switch is removed

The new fog light switch is installed

The trim panel is reinstalled

The fog lights are tested for proper operation

What does
Combination Switch Assembly Replacement
entail

A combination switch assembly has several functions. This component is connected to your turn signal indicator and controls all of the functions on the lever. The combination switch assembly adjusts the high and low beams on your headlights, indicates when you are turning left or right, and activates the hazard lights when needed. It turns on the windshield wipers in the front as well as the rear if equipped. The switch also activates the windshield washer fluid.
The switch is located inside the steering column and connects to the lever with multiple wires that run to the various components that the switch controls. When the switch fails, none of the components attached to it will work. However, a faulty switch may work periodically or for some components and not others until it fails completely.

Keep in mind

The combination switch assembly activates and adjusts all components attached to the turn signal lever.

The steering column must be removed to access the switch.

The combination switch will need to be replaced not repaired.

The combination switch will vary based on make and model and even year because different controls have been added to the turn signal lever.

What common symptoms indicate you may need to replace the Combination Switch Assembly?

Headlights won’t adjust from high to low beam or vice-versa

Turn signals fail to operate

Windshield wipers won’t turn on or washer fluid isn’t activated

How it's done

The combination switch assembly is verified that it needs to be replaced. The battery is then disconnected.

The steering column trim panels are removed for access and the defective combination switch assembly is disconnected and removed.

The new combination switch assembly is installed and connected.

The trim panels are reinstalled. The battery is then reconnected and the combination switch assembly is tested for operation.

The vehicle is road tested to ensure proper operation of the combination switch assembly.

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